AB1A FASCIATA. 39 



the larger ? his head reaching to about her middle 

 legs. She is very restless, but he holds on and is not 

 shaken off. 



Hatching takes place in from two to three weeks, 

 according to the season and temperature. The newly- 

 hatched larva is from 4 4*5 mm. in length, tapering 

 towards the tail ; the colour dirty, transparent-darkish, 

 with the remains of the green yolk shining through in 

 the posterior part of the body. The head is at first 

 pale brown, but becomes quite black in a few hours. 



On llth June Dr. Osborne placed thirty -four larvae, 

 which had hatched during the previous night, so as to 

 watch them through their various moultings, and the 

 following is an abstract of his observations on the 

 growth of these larvse : 



June 12th, 5 p.m. Head quite black, body more 

 opaque, especially on the dorsal aspect, but the ardoise 

 bloom has not yet developed. One is 5 mm. long at 

 rest. 



June 13th, 7.55 a.m. Some 6 mm. or more long, 

 not much ardoise bloom conspicuous yet, but begin- 

 ning to appear under a lens. 



June 14th, 7 a.m. Ardoise bloom pretty well deve- 

 loped on a few. Longest about 6'5 mm. at rest 



6.12 p.m., the bloom appears now to be fully deve- 

 loped on most. 



June 15th, 7.30 a.m. Nearly all with ardoise bloom. 

 No moult yet. Some measure 6'5 7 mm. 



June 16th, 6.15 a.m. Longest 8 8*5 mm. Full 

 ardoise bloom (coming off on brush), except in one or 

 two. Figure still tapering from head to tail, but more 

 cylindrical than at first. 



June 18th, 7 a.m. Length 7'5 ; 8, 9 mm. These 

 are amongst the longest, there being others much 

 smaller. Not much growth (in length) since yester- 

 day ; head now much smaller than second segment- 

 June 19th, 7.15 a.m. Ardoise bloom all gone; 

 larva dirty, semi-transparent. Measure, some 8 mm. 

 the largest met with to-day. The step taken by the anal 



